Chart C-8B Shift Solenoid Functional Check (4T60E Transaxle)

Transaxle Control Circuit Diagram:

Chart C-8B, Shift Solenoid Functional Check:

Chart C-8B Table:

CIRCUIT DESCRIPTION:
The 4T60-E transaxle uses two solenoids to control shifting. Shift solenoid "A" and shift solenoid "B". Refer to the table for solenoid operating sequence.

The PCM monitors the TPS and vehicle speed vs. engine speed to determine the correct shift points.

If the PRNDL position indicates manual low position, the PCM will keep both solenoids "A" and "B" energized until 5400 rpm at which point the PCM will force a shift by de-energizing solenoid "A". Manual 2nd and manual 3rd are controlled hydraulically within the transaxle.